If they have any suspicions, even unfounded ones, they can turn your work computer into a crime scene and perform forensic analysis that puts a police department to shame.

FORBES: Lessons from the Goldman trading trial

That forensic analysis was conducted by a computer expert, the family said.

CNN: STORY HIGHLIGHTS

The laptop computer he had been carrying was confiscated for forensic analysis, but Siddique was allowed to return home before being arrested in the dawn raid on his home just five days later.

BBC: NEWS | UK | Scotland | The quiet student plotting terror

In addition to Walker, five witnesses testified Thursday morning, including officials with cell phone companies and a computer forensic specialist for the Ohio Bureau of Investigation who testified about her analysis of the contents of 17 cell phones examined by police.

CNN: STORY HIGHLIGHTS